all i want to do is cancel but this takes forever

i called telkom on the 7th of april... got a cancellation form - completed this and emailed this back to telkom... i called again and was told that i will know the outcome in 72 hours.... today i call and get told it is in the retention queue from the 10th ? i emailed this to the retention department directly on the 7th.... and we are now over our 72 hours and no feedback... the answer on every question, i am sorry i dont have enough information to comment... what is the retention departments telephone number... BINGO the call centre says they dont have there numbers - laughing matter. they dont even know who the retention manager is - really i just want to cancel my contract - nothing can be easier i am sure